Detections
Analytics

Security Updates for Internet Explorer (July 2021)

high Nessus Plugin ID 151597

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Synopsis

The Internet Explorer installation on the remote host is missing a security update.

Description

The Internet Explorer installation on the remote host is missing a security update. It is, therefore, affected by the following vulnerabilities:

 - A security bypass vulnerability exists in the HTML platforms component. An unauthenticated, remote attacker can exploit this to bypass security in order to gain full access to the system. (CVE-2021-34446)

 - A remote code execution vulnerability exists in the MSHTML platform. An unauthenticated, remote attacker can exploit this to bypass authentication and execute arbitrary commands. (CVE-2021-34447, CVE-2021-34497)

 - A memory corruption error exists in the scripting engine. An unauthenticated, remote attacker can exploit this to execute arbitrary commands. (CVE-2021-34448)

Solution

Microsoft has released the following security updates to address this issue:
-KB5004233
 -KB5004289
 -KB5004294
 -KB5004298
 -KB5004305

See Also

https://support.microsoft.com/en-us/topic/5004233

https://support.microsoft.com/en-us/topic/5004289

https://support.microsoft.com/en-us/topic/5004294

https://support.microsoft.com/en-us/topic/5004298

https://support.microsoft.com/en-us/topic/5004305

Plugin Details

Severity: High

ID: 151597

File Name: smb_nt_ms21_jul_internet_explorer.nasl

Version: 1.8

Type: local

Agent: windows

Published: 7/13/2021

Updated: 12/29/2023

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.7

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2021-34448

CVSS v3

Risk Factor: High

Base Score: 8

Temporal Score: 7.4

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

CVSS Score Source: CVE-2021-34446

Vulnerability Information

CPE: cpe:/a:microsoft:ie

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/13/2021

Vulnerability Publication Date: 7/13/2021

CISA Known Exploited Vulnerability Due Dates: 11/17/2021

Reference Information

CVE: CVE-2021-34446, CVE-2021-34447, CVE-2021-34448, CVE-2021-34497

MSFT: MS21-5004233, MS21-5004289, MS21-5004294, MS21-5004298, MS21-5004305

MSKB: 5004233, 5004289, 5004294, 5004298, 5004305